gdb/testsuite/gdb.server/stop-reply-no-thread.exp

   1 # This testcase is part of GDB, the GNU debugger.
   2 #
   3 # Copyright 2018-2021 Free Software Foundation, Inc.
   4 #
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 # Test backward compatibility with older GDBservers which did not
  19 # include ";thread:NNN" in T stop replies when debugging
  20 # single-threaded programs, even though they'd list the main thread in
  21 # response to qfThreadInfo/qsThreadInfo.  See PR remote/22597.
  22
  23 load_lib gdbserver-support.exp
  24
  25 if { [skip_gdbserver_tests] } {
  26     verbose "skipping gdbserver tests"
  27     return -1
  28 }
  29
  30 standard_testfile
  31 if [prepare_for_testing "failed to prepare" $testfile $srcfile] {
  32     return -1
  33 }
  34
  35 # Run the tests with different features of GDBserver disabled.
  36 proc run_test { disable_feature target_nonstop } {
  37     global binfile gdb_prompt decimal
  38
  39     clean_restart ${binfile}
  40
  41     # Make sure we're disconnected, in case we're testing with an
  42     # extended-remote board, therefore already connected.
  43     gdb_test "disconnect" ".*"
  44
  45     set packet_arg ""
  46     if { $disable_feature != "" } {
  47         set packet_arg "--disable-packet=${disable_feature}"
  48     }
  49     set res [gdbserver_start $packet_arg $binfile]
  50     set gdbserver_protocol [lindex $res 0]
  51     set gdbserver_gdbport [lindex $res 1]
  52
  53     # Disable XML-based thread listing, and multi-process extensions.
  54     gdb_test_no_output "set remote threads-packet off"
  55     gdb_test_no_output "set remote multiprocess-feature-packet off"
  56
  57     # Set target-nonstop mode.
  58     gdb_test_no_output "maint set target-non-stop ${target_nonstop}"
  59
  60     set res [gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport]
  61     if ![gdb_assert {$res == 0} "connect"] {
  62         return
  63     }
  64
  65     # There should be only one thread listed.
  66     set test "info threads"
  67     gdb_test_multiple $test $test {
  68         -re "2 Thread.*$gdb_prompt $" {
  69             fail $test
  70         }
  71         -re "has terminated.*$gdb_prompt $" {
  72             fail $test
  73         }
  74         -re "\\\* 1\[\t \]*Thread\[^\r\n\]*\r\n$gdb_prompt $" {
  75             pass $test
  76         }
  77     }
  78
  79     gdb_breakpoint "main"
  80
  81     # Bad GDB behaved like this:
  82     #  (gdb) c
  83     #  Cannot execute this command without a live selected thread.
  84     #  (gdb)
  85     gdb_test "c" "Breakpoint $decimal, main.*" "continue to main"
  86
  87     # Continue until exit.  The server sends a 'W' with no PID.
  88     # Bad GDB gave an error like below when target is nonstop:
  89     #  (gdb) c
  90     #  Continuing.
  91     #  No process or thread specified in stop reply: W00
  92     gdb_continue_to_end "" continue 1
  93 }
  94
  95 # Disable different features within gdbserver:
  96 #
  97 # Tthread: Start GDBserver, with ";thread:NNN" in T stop replies disabled,
  98 #          emulating old gdbservers when debugging single-threaded programs.
  99 #
 100 # T: Start GDBserver with the entire 'T' stop reply packet disabled,
 101 #    GDBserver will instead send the 'S' stop reply.
 102 foreach_with_prefix to_disable { "" Tthread T } {
 103     foreach_with_prefix t_nonstop { off on } {
 104         run_test $to_disable $t_nonstop
 105     }
 106 }